Sewing-machine.



W. A. MACK.

SEWING MACHINE.

APPLIUATION HLBD Nov. a, moo.

1,060,689. Pawnamay 6,1913.

7 SHEETS-SHEET 1.

W. A. MACK.

SEWING MACHINE.

APPLIGATloN FILED Nov.3,19oo.

Patnted May 6, 1913.

WV. A. MACK.

SEWING MACHINE.

APPLICATION FILED NOV. 3, 1900.

Patented May 6, 1913 7 SHEETS-SHEET 3.

W. A. MACK.

SEWING MACHINE.

APPLICATION FILED Nov. s, 1900.

Patented May 6, 1913.

7 SHEBTS-SHEBT 4.

wif/mesmo W. A. MACK.

SEWING MACHINE. APPLICATION FILED NOV.\8, 1900.

1,060,689. Pdtemed May 6,1913.

7 SHEETSSHEET 5.

Y @Ui/tngo@ y, l 3 n u@ n to L W. A. MACK.

SEWING MACHINE.

APPLICATION FILED NOI/.3,1900

1,060,689. Patented May e, 1913.

7 SHEETS-SHEET 6.

W. A. MACK.

SEWING MACHINE.

APPLICATION FILED Nov4 s, 1900` 1,060,689. Patented May 6, 1913-SHEBTSAdSHBET 7 f J1/rnc utoc $9 W mnd/vaan:

UNITED sTATEs vPATENT omnes.

WILLIAM A. MACK, OF CLEVELAND, OHIO, ASSIGNOR TO STANDARD SEWING MACHINECOMPANY, F CLEVELAND, 0HIO,..A.l CORPORATION OF OHIO.

SEWING-MACHINE.

. spcification of mim raient. Patented May 6, 1913. Application filedNovember 8, 1900. Serial No. 35,395.

ment the presser is again lowered into cnga ement with the work to holdthe saine while the helper-bar is raised and moved backward with theother members of the feeding mechanism to their starting position. nsuch manner, the two strips of inntorial to be stitched together beinglirnitv gripped at all times duringr the sewing operation, and, duringthe feeding movement 4being freed from any drag or strain thereon,insures the feeding together of two strips in almost absolute unison.

Another object of this invention is to inir'ove the take-u mechanism soas to render To all fnv/rom, it may concern Be it known that I,Vtinniaiu A. Macu, a citizen of the United States, and a resident ofCleveland, Cuyahoga county, State of 5 Ohio, have invented certain newand useful Im )rovements in Sewing-Machines, of which the following is aspecification, reference being had to the accompanying drawin formingpai-t thereof.

.lhis invention comprises improvements m certain parts of the feedingand thread controlling mechanism of the machine, and has particularreference to that class of sewing machines, termed needle-feed machines,although not limited in all its features thereto.

.One of the objects of my resent invention is to provide an improvedpfeeding mechanism by which two strips of material of the same length andadapted to be stitched-toether may be so fed in unison as toliisuregothv ends coming out even at the end of the sewing operation.

In a machine employing only one feed, whether an upper or lower one,where one strip or piece o goods moves in contact with astationary surace and the other stri 1s enga ed by the feed, that stri againstw ichthe ed acts is caused to gat er or wrinkle to a greater or less extentby reason' of the forward action of the feed against the Same and thedra produced on the upper or opposite strip y the presser-foot or otherst-ationary surface against which it is held in contact, thusnecessarily causing one strip to become shorter thany the other duringthe sewing operation and so preventing their ends nis ing or coming outeven.

In accordance with niv present invention, I combine with a needle feedmechanism embracing a lower horizontally moving feed member, an upperfeed member or hel er-l bar for cooperating with the said lower eedmember to grip tie two strips of material between the same and act incombination with the needle in moving or feeding said stripe in unison.A mechanism operatively connecting. said helper-bar and `the presserburoperates to lower the former into gripping en agement'with-the work and,simultaneous y with such engagement, raise the presser from its holdingengagementwith they work so as to permit the latter being moved or fedwithout'an dra yor strain 55 thereon. -At the end` of t e feeingmoveautomaticall adjust-able in its action to conform to the iffcrentlengths of stitch.

Takempdeviees are usually driven froin the driving shaft of the machinethrough the medium of grooved cams or other intei-4 mediate mechanismswliich, after becoming worn, creates more or, less noise and frictionand'also renders the take-up less efficient and regular in its action.In accordance with mv invention, a take-up device, consisting of a everarm arranged to operate on the front side of the faceplate, is rigidlyconnected with the ordinary needle-bar pitman which transmits movementfrom the rot-ating crank on the driving shaft to the vertically niovableneedle-bar. The take-up, as thus supported, is operated by said pitmanto receive a compound vertical and vibratory movement and cause itsends, through openings direction toward and away from certain stationarythread guides so as to properly liandle and control the thread in theformation of stitches. A take-u thus supported and actuated willnecessari y be both regular and positive in its operation.

A further and important feature of tlu` invention is the adjustment. ofthe take-up and feed. As well understood, the distant-ev of movement ofthe feed determines the length of stitch, and, according as the stitchis longer or shorter, a greater or less amount of thread is required forthe same. Consov quently, by adjusting the horizontal throw ha theneedle-bar, the movement of the uecdhz bar pitman will also be therebychanged and so regulate the `action of the connected takeA up to-conformto the changed or adjusted movement of the feed. The invention also 1tpositive and e cient in operation, and also in which t-he thread ispassed, to move in a l of the feeding members, one of which is lincludes various other improvements in the sewing mechanism, all ofwhich will be fully set forth in thefollowingdetailed de scrption, inwhich reference is made to the accompan ing drawings forming part ofthis s eci ication.

Re erring to the drawings: Fi ure 1 is n side elevation of a sewinginaciine einhodyng my invention, with the bed-plate in section. Fi 2 isan enlar ed front end elevation of tlie same with t e .face-plateremoved. Fig. 3 is a. vertical section through the front end of themachine arm, taken on line 3-3 of Fi 4, also showing n portion of theneedle-iur. Fi 4 is a horizontal section through the ront end of themachine arm, taken on line 4-4 of Fig. 3. Figs. 5, G, 7, 8, and 9' arefront end the difelevations of the machine showin assumed by the ta e-upand ferent positions feeding devices during the formation of a stitch,'and Fig. 10 is a side elevation of the frontend of the machine, showinthe side opposite that shown in Fig. 1, an with the parts in theposition shown in Fig. 5. Fi 11 and 12 are enlarged detail views of t ework-engaging portions of the feed mechanism, partly in section andcorresponding in ppsition with that of Figs. 7 and 8 respective Iny saiddrawings, the sewing machine head or frame comprising the bed-plate 1and the overlian ing arm 2, the upper or main driving sha t supported inbearings in said arm the lower s nttledriving sha t: 4 supported inbearings on the under side of the bed-plate and driven from the uppershaft through t-he medium of operative connections, and the rotaryshuttle 5 driven from said lower shaft 4 through 'the niedium of anintermediate shuttle-driver, are all substantially as found in theStandard sewing machine upon which, in the present instance, I haveapplied my improvements.

The lower member of my improved feeding mechanism consists of ahorizontally reciprocating feed-bar 6 having a projection or dog 7 onits upper surface which projects through an elongated slot 8 in thethroat-plate 0 so as to engage with the under side of the work. Thisfeed-bar 6 adjacent to its opposite ends is supported and guided withina groove 10 in the under side of the bed-plate as clearly shown in Fi 1,the saine restin i at one end upon a. rol 11 attached to tie front endof the bed-plate, and at its opposite end being pivotally connected at12 with a short crank-arm 18 on the front end of a rock-shaft .14 fromwhich it receives its longitudinal movement. The two upper members ofthefeedinigs mechanism, consisting of the helper-bar havin a floot 16cooperating with the projection of the lower feed member in gripping thework or material interposed between the same, and the needle-bar 17carrying the needle 18 for entering the work, are both loosely supportedin bearings in the upper endof the machine arm and adjacent to theirlower end passed through a block or gate 10, which latter is pivotallyconnected with a horizontally reciprocating har 20 from which the he perand needle hars receive their lateral or feediiw movement. This har 20is supported to slide within n seat 21 in the lower end of the machinearm, as clearly shown in Fig. 3, and is operated from a cam or eccentric22 on the upper driving shaft 3 in a manner as follows: A lever 23,mounted on a short shaft 32 which is journaled in a lug 24 on one sideof the machine arm, is pivotally connected at its lower end with theouter projecting end of the bar 20 at 23', and adjacent to its upper endis provided with an elongated slot 25 in which a stud 26 is adjustablysupported. A second lever27, pivotally supported in a lug 28 on themachine arm in a position above the said lower lever 23, is providedwith a face-groove 2) on its lower arm havin a sliding block thereinwhich connects 'with the inner end of said stud 26 on the lever 23, andat its upper end is pivotally connected at 30 with the outer end of areciprocating rod 31 which is connected with and driven by the said camor eccentric 22 on the driving shaft. By such arrangement of parts recirocating movement is communicated to tie bar 2O from the driving shaftand by adjusting the. ivot connection or stud 26 back and forth in theslot 25 .the len h of movement of said bar 20 and there y the lateralthrow of the helper and needle bars may be regulated.

As a means for operating the lower feed bar 6 in unison with the upperfeed members, the shaft 32 which carries' the said lower lever 28 isextended through the supporting lug 24 and provided on its rear end withan arm 33 rigidly connected therewith, as shown in Fig. 1. The end ofthis arm 83 is bifnrcated and engages with a roll or block carried by anarm 34 of a rockshaft 35, which latter is mounted in hearings adjacentto the opposite ends of the machine and provided at its rear end with asecond arm 36 which connects, through themedium of a pitman 37, with anarm 38 located on the said lower rock-shaft 14, which latter is mountedin bearings on the under side of the bed-plate and provided with the arm13 at its front end connecting with the feed bar as before described. A

When the lever 23 is operated from the driving shaft to receive avibrating movement, its rigidly connected arm 38 is likewise operate andcommunicates a rocking more 'merit to the lower shaft 14 through theinellt) dium of the connections as described and so causes the arm 13 atthe front end of said shaft to vibrate and so give the feed bar 6 itshorizontal reciprocating movement. The upper and lower members of thefeed bein t. ius operated from the driving shaft throug)i the medium ofthe saidlever 23, it will e understood that the one adjustment of thelatter caused by the shifting of the stud 2G will regulate thehorizontal throw of both said upper and lower feed members and causethem to always move in unison whatever their length of throw may be.

The presser-bai- 39 is held, in the usual manner, with a normal downwardpressure by means of a coiled spring 40 which has a bearin at one endagainst the upper inner presser-bar block 41 by means of a ivotscrew 45,another arm extending loose between the said lugs on the hel r-bar lock42, and its third arm being bifurcated-and embracing the lower end of anarm 46 which is secured on the'end of a short shaft 47 journaled inbearings in the upper frontend of the machine arm 2. This shaft 47asmost clearly shown in Figs. 1 and 3, extends through the arm 2 and isprovided at its rear end with a second rigidi connected arm 48, whichlattcr'connects with the inner end of the eccentric rod 31 through themedium of al pitman 49. In the operation of the machine, the inner endyof the eccentric rod 3l receives a vertical or up and down movementwhich communicates a rocking movement. to the shaft 47 through themedium of the connections referred to, and so causes a laterallyswinging or vibrating movement-to the lower end of the arm 46 at thefrontk end of said rock-shaft'which operates the lever 44 in a manner aswill hereinafter be described.

'lhe presser-har 39 and helper-bar 15 being operativel connected throughthe medium of the `lever 44 in the manner described, it will beunderstood that the presser-bar spring 40 serves to exert a yieldingdownward pressure upon .the'fhelper-bar as well as the presser-bar,vertical movement of either one or both of said bars being permitted bythe sliding connection of thou per bifurcated endof the lever 44 with thsaidvibratingrarm 46 assliown. vIn order to raise the helper andpresserbars'forthe purpose 4of releasing-theiwork, theblock t1 on thepresser-bar is adapted to'be engaged by a suitable lifting-device iu theusual manner, and, bv reason of the lever 44 connecting with the blockson both of said bars and being guided by the arm 46 which is renderedstationary by, the stopping of the machine, the helper-bar is caused tobe raised and lowered in unison with the presser-bar. Any suitable meansmight be employed for raisin the presser and helper bars, one means, asherein shown, consistingr of an elbow-lever 50 which is iivotallysuppoi'ted upon the side ofthe mac iine atl with one end iavingconnection with a vertically movable plate 52 which is arranged to slideupon the outer wall of the machine arm and provided with a lowerinwardly turned end 53 projecting through an opening in the arm into aposition beneath the presser-bar block 39 so as to engage therewith, asclearly shown in Fig. 2, and the opposite end of said elbow leverextendin downward through an openin in the be -plate into a ositionbeneath tie latter to be operated y an suitable actuating means. Theordinary and-operated lifting lever, indicated at 54, is also provided,the same as herein shown being adapted to engage with the inwardlyturned end 53 of the plate 52 in raising the presser-bar.

In the operation of the machine as described, after the work has beenpliiccd under the re ular presser-toot in the usual manner an themachine set in motion, the helper-bar moves downwardly from the positionshown in Fig. 5 to that shown in Figs. 6 and 2 so as to grip the workbetween the same and the lower feed member 7, while simultaneously withsuch gripping of the work by the helper-bar, the presserfoot raises fromengagement with the work to the position shown in Figs. 7 and 8 so aslto permit said work being fed or carried forward by the feeding memberswithout drag or strain thereon. Such action of the presser and helperbars is secured in a. inanner as follows: The lever 4.4 being rocked bythe vibrating arm 46, when the helperbar is lowered into grippingengagementwith the work and becomes stationary, the said lever is causedto iivot or fulcruni between tlie lugs on the helper-bai' block and soraise its op iosite end and the connected resser-bar. pon the returnswing of said over, when the resser reaches a position in engagementwith the work, the lever will of course fulcruin u on the pivot-screw t5in the presser-bar iilock aud so raise the helper-bar. In this manner,one bar is caused to be brought into holdingr or gripping `engagementwith the work before the other rises therefrom, both of the same beingin engagement with the work only as the lever 44 and its actuating arm46 move past a central vertical line.'v To continue with tho feedingoperation of the parts,

after the work has been gripped-between I the upper and lower grippin vmembers'of the feed as described-but be ore any for-y ward movement ofthe same, the needle first descends through the work as shown in Figs. 7and 11, passing through the needle opening 16 in the feed membcr- 1G,and, while in the work and during its movement to throw out the loop, ismoved laterally with the said gripping members of the feeding mechanismand as a part of the latter to feed or carry the work forward. After theseveral members of the feeding mechanism have reached the limit of theirfeeding movement as shown in l `igs. 8 and 12, the needle first risesfrom the work and the presser moves downward into engagement with thelatter, while inunediately following such engagement, the helperbar, asbefore descri vd, rises from its engagement with the work and is swungbackward into position to be n ain lowered into gripping engagementwitti the work at the starting point of the feeding movement.

In ordcr that the helper-bar may be adjusted to remain in engagementwith the work a greater or less engtll of time according to the lengthof its lateral or feeding movement, or in other words, to remainingripping relation to the lower member 7 of the feed according to thelength of the horizontal feeding movement-of the latter, i I haveprovided the rear arm 48 on the upper rock-shaft 47 with an elongatedslot i 55 therein, as shown by dotted lines in Fig. .f 3, whereby theconnectingl end-ofthe pit-' i man 49 may be adjusted 1n a direction to'-ward or away from the shaft-47.s`o asto i vary the extent of therockingmovemet-l of the latter and thereby thettbrow of-its front arm46, the throw of.wliich latter, being greater or less, operates thelever44 so as to hold the he] er-har in gri ping-position agreater or`ess length o time,.as will bc rcadilv understood.

By employin the up )er and lower members of the` feeding mecllianism forgrippingthe work upon opposite sides and retaining such grip durin thefeedin movement g and until the worli is released, am enabled to providesaid feed members with smooth gri )ping surfaces whereby work or materiaof any character, such as soft kid leather for instance, may be fedwithout liability of being cut, marked, or otherwise' dama ed.Such'feature is very important as wi be obvious. lhc presser-footls-also provided with a smooth under surfacefor enga ement with the\v'ork,but.it's upwarf ly finclined toe, .indicated".at'-thzis formedwith a roughened.-surface'on:its-under'side for the= purpose-0f engaginCany very abra t scam or seamsin-the-wvor 'and prevent txe latter fromslidin or being 'forced backward in the evento the needle part of saidother than t vconnection between such 'pitman G1 is vwith the rotatingcrank G3 on the front end of the upper fopposite lower end with theblock 64 on the lf vertically movable needle-bar 17, in the 'usualmanner. ition, whereby fmoved in a circular fend in a substantiallyvertical path, a comf pound vertical and sion device, the loop or eye ofthe ordinary slack thread :throuh the eye 67 o and helper-bar heiligraised or disengaged from the work at the time of such engagement, aswould be liable to occur if the under surface of such upwardly turned orinclined toe presented a smoot i surface.

My improved take-u indicated at 57, consists o an arm whici is arrangedto operate on the front side of the face-plate and provided with ashort. rearwardly projecting extension 58 about midway between its endswhich extends through an elongatml slot 59 in said face-plate and isrigidly attached to lugs 60, (S0, on the ordinary needlebar pitman (l1by means of screws 462, (i2, as clearly lshown in Figs. 2 and 8. By suchconnection, the take-up arm 57 is carried and caused to operate asthough an integral ilman, and any lsuitable means, lat shown an(described, may therefore be employed for securing rigid parts. The saidpivotally connected at one end di'ivine shaft 3 and at its By means ofsuch connecone end of the pitman is path and the opposite lateralmovement is given to said pitman which is communicated to the connectedtake-up arm in a manner as follows: The said take-up arm, being attachedto the pitman adjacent to its pointof connectionwith the needle-bar as,clearly shown in Figs. 2 and 3, is caused to move in a'.ibstantiallystraight vertical ,path at. its centerl orl point ofconnection with the-pitman and be rocked by the lat- !erally movingaction of the latter to give ja vibrating 'which latter act upon thethreat incr yas will be described.

osito ends,

movement to its op m a man- -In threading the machine, the thread. in-

idicat-ed at a, is passed from the spool or =other thread .ordinary disktension dcvice located upon supply between the disks of an the frontside of the machine arm, as most clearly shown in Fig. 10. From thisten` the thread is passed through control r or take-u spring 66, then acontroller arm (3H to be ereinafter referred to, then through an eye 69inthe upper end of the take-up arm, then through an .eye 70 in astationaxir Iarm 7l which is secured uponthe frame of ,the machine, andvfrom thence down through gan eye 72 near the lower end of the take-nparm, then through a stationary eye or staph` 73on the face-plate, thenback through a second eye 74 in the lower end of the takeup arm, andthen down through a second stationary eye 75 on the face-plate tollatif,

needle, all asclearly shown in the drawings. In orderto avoid confusionof terms, I will hereafter refer to the laterali stationary eyes 67',70, 73, and 75,115 gui es, in contradistinction tothe eyes of themovable take-up. When the machine is threaded as described and set inmotion, the action of the-take-up is such that its opposite ends move toa position substantially in line with the adjacent guides on the machinearm at a time when the needle is at its highest point and the shuttle isin osition to cast oi' the loop, as shown in g. 5, at which time thegreatest amount of thread is renired for passing around the shuttle.``rom such position, the take-up arm is rocked or operated to move itsends in a lateral direction away from the stationary guides, as shown inFig. 6, so as to draw up and complete the stitch. After the stitch isdrawn up and completed, and the needle has begun its descent as shown insaid Fig. 6, the ends of the take-up arm are then moved backward towardthe stationary guides so as to ive downvthe necessary slack thread to te needle when entering the work, as indicated in Fig. 7, and forthrowing out the loo to be entered by the shuttle, as shown in ig. 8.From the latter position which shows the eyes in the take-up below theadjacent stationar idee, the ends of the take-up are move in the path ofan arc, as indicated in Fig. 9, back to its startin position, as shownin Fig. 5, so as to gra ually give down the necessary thread to theshuttle to be passed around the same in the manner indicated. The actionof the take-up in thus moving at its opposite ends in a direction towarand away from the adjacent stationary thread lidcs serves to control thethread in givin own and taking up the same as reuire with great nicety,the movement of tie take-up as given by the -pitman 61 and thearrangement of the guides relative thereto being such as to cause thethread bein drawn up uickly to complete the stitci, and' given downslowl as required without producing undue slacliy.

I will now describe the automatic adjustment of the take-up to conformto the different len ths of stitch.

As wel understood, a greater or less amount of thread is requiredaccording to the length of stitch, which latter is regulated byadjusting the horizontal movement of the fee Therefore by adjuetin thelateral throw of the needle-bar, which orme one of the members of myimproved feeding mechanism, the lateral movement of the connectingpitman 61 will also'bethereby adjusted and so vary the movement of t ieconnected take-up arm` For instance, if the lateral throw of theneedle-bar is increased to produce n greater length of "stitch, suchincreased throw will so change the position 0r angle of the connectedpitman and its take-up arm 57 as to cause thc ends. of the latter tomove a greater distance from the ad'acent guides when draw-ing oil' thethread rom the spool so as to provide 'the desired increase. If thelateral throwl "of the needle-bar is decreased to provide a shorterstitch, such decrease will of course correspondingly lessen the throw ofthcI f take-up and so insure a less uinount ol" thread being drawn fromthe spool. 'lhc .ends of the take-up arm, in moving back toward thestationary guides2 are always returned to the saine determined positionrelative thereto, so as to give down thcr pro er amount of thread, byreason of the nee le-bar always returning to the saine startingposition, as it is understood that the latera throw of the needle-bar,whether reater or less, is always from the same start ing point. Agreater or less amount of thread is also required according to thethickness of the work beine operated upoii. For instance, to. producethe most desirable form of stitch, it is necessary that a suflicicntlength of thread be given down to enahh` the take-up to draw u the loopof the up er thread until the loc c between the thrczuh: is at thecenter of the work. Hence it fol lows that the length of thread givendown at each stitch should be greater or less ac cording as to whetherthe work is thicker or thinner. As a simple and effective means for thusautomatically regulating the length of thread 'ven down at cach stitch,thc said contro er arm 68, through the eye of which the t` -read ispassed between the spring G6 and the upper end of the takeup arm 57 asbefore described, is attached to the end of an arm or extension 42 olVthe helper-bar block 42 which projects through a vertically elongatedslot 42 in the arm 2 as clearly shown in Figs. 2 and 10. By sucharrangement and ,combination of parts, when a piece of work is insertedbeneath the helper-bar the thickness of auch work will determine theproper position of the controller" arm by reason of its conncc tion withsaid helper-bar. Then, in the event of a seam or any other increasedthickness in such work .assing beneath thc hel er-bar, the latter wi lbe raised thereby an so move the controller upward to rive off enoughadditional length of thi-ea( to provide for such increased thickness ol'work. After the scam or increased thickness in the work has assedbeneath thel helper-bar, the latter o course lowers und so moves thecontroller back to its original position to ive cti the same amount ofthread' as be ore. When the controller is moved upward as described toprovide for nn increased thickness in the work, it also acts to relievethe strain on the slack thi-cud loy take-up s ring 66 andinsures thethread bein sufheiently slack inthe'eye of the need e as the latterenters the workto prevent undue strain or breakage ofthe same'.

The eye 67 in the control er'arm'68, although vertically movable as andfpr the purpose set forth, is laterall stationary relative to theadjacent end o the take-up arm 57 in its action toward and away from thesame, as hereinbefore referred to.

As a simple means for securing the release of the tension on the u perthread when the work is to be remove I have secured a second arm 76 onthe outer end of the helper-bar block extension 42', as shown in Fig.10, the upper wedge-shaped end of which is adapted to be entered betweenthe disks of the tension device to separate the same and release thethread -when the helper-bar is raised, in a manner as will be described.l'Vhen the helper-bar is in its lowered position resting upon the lowerfeed member or upon tie work, the connectcd tension release arm 76 is sofar below the tension disks'that when the hel er and )resser bars areraised by their lifting device it will not enter between said disks.lVhen the said helper-bar is raised however. by the action of the lever44 an the machine is brought to a stop at such time, the said tensionrelease arm 7G has been moved by the raising of said bar sufficientlynearer to the tension so'that when the resser and helper bars are nowraised by tiieir lifting device, the said arm 76 will be caused to enterbetween the tension disks and release the thread. The action o f theneedle-bar is so timed that it is always above and disengaged from thework when the helper-bar is raised therefrom by the action of the saidlever 44.- as described. In this manner, the releasing of the upperthread is only secured when the several parts are in their properposition to permit of the removal of the work, that is', with the needleand helper bars raised, as shown in Figs. 5 and 10. A

The arm or casting 2 is provided with an oil recess or chamber 77 formedtherein at a point adjacent to the needle bar bearing block 19, as shownin Fig. 8, in which a suitable wick 78 is located with one end thereof,indicated at 79, projecting laterally over one edge of the oil chamberinto contact with the needle-bar so as to automatically lubricate thesame. A plat/e or cover 80 closes the top of said chamber, the samebeing provided with an upturned flange 81 by which it isremovably'secured in position by means of a screw 82.

Having thus set forth a ractical embodiment of my invention, I (o notwish to be understood as confining myself to the'particnlnr details ofconstruction and combination of parts as set forth, as the same may bemore or less materially modified without departure from the spirit of myinvention, for

What I claim and desire to secure by Letters Patent of the UnitedStates, is-

-1. In a sewing machine, a combined rclciprocating and vibratingthreadcarryingr needle, two feed-members operative to engage and clampthe work therebetween and co erating with said needle to effect the feeof the work while the needle is in the work, and operating means for im)arting work feeding movements to both sai needle and feed-members.

2. In a sewing machine, a combined reciprocating and vibrating threadcarrying needle, two feed-members operative to engage and clamp the worktherebetween and co erating with said needle to effect the fee of thework while the needle is in the work, operating means for impartin workfeeding movements to both said nee le and feed-members, and adjustingmeans common to both said needle and feed-members for effecting a likeadjustment .of feed movement to the same.

3. In a sewing machine, a feeding mechanism comprising a lowerfeed-member, an up er fee -memtber, a driving shaft, mean:-4 inc uding adevice actuated from said shaft for communicating a feeding movement tothe feed-members, and means actuated from said device for moving theupper feed-meinber to and from its operative work gripping osition.

4. n a sewing machine, a feeding mechanism corn risin a lowerfeed-member, an up er fee -mem r, a driving shaft, means inc uding adevice actuated from said shaft for communicating a feeding movement tothe feed-members, means actuated from said device for moving the upperfeed-member to and from its operativo work gripping po` sition, andadjusting means for regulatingY the time of engagement with the work ofthe u per feed-member.

5. n a sewing machine, a feeding mechanism comprising a lowerfeed-member, an up er feed-member, means for communicatmg a feedingmovement to said feedmembers, a lever for movin said upper feed-membervertically to an from its operative work gripping position relative tothe lower feed-member, and adjusting means for regulating the extent ofmovement of said lever and thereby the time of engagement with the workof the upper feedmember.

6. In a sewing machine, a feeding mechanism comprising a lowerfeed-member, an upper feed member, means for communieatin a feedingmovement to said feedmem ers, arlever having operative conne(-V tionwith said upper feed-member to raisiand lower the same, a rock-shafthaving an arm engagin with and operating said lever, means for operatingsaid rock-shaft, and ad'nsting means for regulatin the extent o movementof said rock-surft and thereby the throw of the lever operated thereby.

T. In a sewing machine, the combination with the presser-bar, of afeeding mechanism comprising a lower feed-member, an upper feed-member,means for communicatnw a feeding movement. to said feed members, meansfor exerting a yieldin downward pressure to said presser-bar an theupier feed-member, means for alternately lowering and raising thepresser-bar and upper feed-inember to and from engagement. with thework, and adjusting means for regulating the time of engagement with thework of said presser-bar and upper feed member according to the length ostitch.

8. In a sewing machine, the combination, of a feeding mechanismincluding the needle-bar and needle, a take-up movable relatively tosaid needle-bar and being operative to draw up and complete the stitch,

means for operating said feeding mechanism and take-up, and a singleadjusting means for regulating the action of said feeding mechanism andtake-up.

9. In a sewing machine, the combination, of a feeding mechanismincluding the needle-bar and needle and a coperatin lower feed member atake-u movable re atively to said needle-bar an being operative to drawup and complete the stitch, means for operating said feeding mechanismand take up, and a single adjustin means for regulating the action ofsaid ceding mechanism and take-up.

10. In a sewing machine, the combination, of a feeding mechanismincluding the nee- Ooplel of this patent may be dle-bar and needle andcoperating upper and lower feed members, a take-np movable relatively tosaid needle-bar and being o erativc to draw up and com ilete thestitcii, means for operating said feeding mechanism and take-up, and asingle adjusting means for regulating the action of said feedingmechanism and take-u 11. In a sewing mac iinez the combination, of afeeding mechanism including a coinbined reciprocating and vibratingneedlebar, a take-ui movable relatively to said needle-har and with thelatter and movable therewith, and means for adjusting the vibratingmovement of said needle-bar and thereby thc action of the take-up.

12. In a sewing machine, the combination, with a feeding mechanismincluding a combined reciprocating and vibratin needlebar, and means foroperating the Ilatter including a rotary actuating device and aconnecting pitman, of a take-up ri idly connected with said pitinan tobe mova le therewith, and means for adjusting the lateral movement ofsaid needle-bar and thereby the action of the take-up.

13. In a sewing machine, a feedin mechanism comprising a lower feed memer and an up er feed member eo erative to engage and c amp the workthere tween, a drivinor shaft, means including a device actuated fromsaid shaft for communicatin a feeding movement to the feedin inem ers,and means actuated from said evice for moving the upper feed member toand from its.l work-clamping position relative to the lower feed member.

'WILLIAM A. MACK. WVitnesses:

Citas. C. EMMoNs, W. C. WALima.

W obtained for ave centr each, by addressing the Commissioner ofPatents.

Washington, D. 0.

beiig operatively connected f

